Sandpaper-holder.



No. 845,159. I 1 PATENTED MAR. 5, 1907.

. M. V. B. STONE.

SANDPAPER HOLDER.

, APPLICATION FILED APR. 27, 1906.

'HE NoRR s 27ans co., wAsnlNnraN, n, c.

MARTIN V. B. STONE, OF SWAMPSCOTT, MASSACHUSETTS.'

SANDPAPER-HOLDER.

Specification of Letters Patent.

'.Patented :March 5, 1907.

Application filed April 27. 1906. Serial No. 313,916.

To a/ZZ whom, it may concern.-

Be it known that I, MARTIN V. B. STONE, a citizen of the United States,residing at Swampscott, in the county of Essex and State ofMassachusetts, have invented a certain new and useful Improvement inSandpaper-Holders, of which the following is a specification, referencebeing had therein to the accompanying drawings.

My invention has for its object to provide a new and improved block orholder for abrading material-such as sandpaper, emery-cloth, and thelike-which shall be provided with devices to hold the paper securely inplace upon one face of the block in such a manner that the paper shallbe kept smooth during use. It is also desirable that as little aspossible of the paper bewasted at the points where the holding devicescome in contact with the paper.

My improved sandpaper-block holds the paper securely upon the block, sothat a very great saving in the amount of sandpaper used is effected.The sandpaper may be placed on the block and secured in place with greatease and little loss of time. The workmen can use the sandpaper muchmore rapidly and with less exertion than when no block is employed orwhen such a block is used as is commonly employed by carpenters, inwhich the sandpaper is folded over the block and both sandpaper andblock are grasped by the workmen. My improved sandpaper -holder blockaffords a slightlyspringy or resilient backing for the sandpaper, whichgives the sandpaper greater effectiveness when in use.

rIhe device embodying my invention is especially useful for sandpaperingmasts, spars, and the like, or large substantially plain surfaces, likefloors, bottoms of boats, or clapboards on the sides of houses; but byreason of the fact that there are no projections whatever at one end ofthe block I find that it may be used conveniently in corners and similarplaces.

The invention will be fully understood from the following description,taken in connection with the accompanying drawings, and the novelfeatures thereof will be pointed out and clearly defined in the claimsat th close of the specification.

In the drawings, Figure l is a view in perspective of a sandpaper-blockembodying my invention and having thereon a sheet of sandpaper. Fig. 2is a view in perspective of the holding means separated from the block.

Referring to the drawings, at A there is indicated a block of anyconvenient shape or size. In practice, however, I find it convenient tomake the block A of a size such that a sheet of sandpaper of standardsize when divided into three equal parts will cover one of the largesides of the block, and there will remain in addition sufficient paperto fold over the ends for engagement with the holding devices. Inpractice I make the block A of resilient material, so that the surfaceof the block to which the sheet of sandpaper is applied will have aslight resiliency or springiness, which by its adaptation to the shapeof the article makes the sandpaper more effective. For this purpose Ifind cork a very suitable material, since it has a sufficient degree ofresiliency, is pleasant to the touch, and has the requisite strength anddurability.

At B is indicated the piece of sandpaper which folds over the ends ofthe block shown at C. The sheet of sandpaper B is held in place by twoend pieces D and E, which are held in contact with the ends of the blockby one or more bolts or rods F, screw-threaded at one end and providedwith thumb-nuts or other convenient tightening means H. I find itconvenient to slot one end plate E, as shown at I, so that when thethumb-nuts I-I are loosened the end plate I may be wholly removed, whichis convenient in putting in place the sandpaper. The through-rods if aresuitably secured to the other end plates D in any convenient manner. itconvenient to have the ends of the rods F fast to the end plate D andflush with its outer surface, and to this end I solder or rivet the saidrods F of the said end plate D, so that there is no projection on theend of the end plate D which would interfere with also find itconvenient to curve slightly the theuse of the device in small spaces orcorners. I edges of the end plates D and E, as shown at K, which insuresthat the sandpaper is held firmly against the edge of the block A, sothat less sandpaper to fold over the edges of block is required.

Thile I have described the two plates D and E as end plates-that is,plates of the size and shape of the end faces of the blocksideplates-that is, plates of the size and shape of the side faces of theblock-may be employed, if found desirable for any reason. I find,however, in practical operation that In practice I find ICO IIO

end plates are preferable, because by that means the amountof sandpaperwasted is reduced to a minimum.

When it is desired to change the piece of sandpaper on the block, it isonly necessary to loosen somewhat the thumb-nuts H, when the end piece Eand the old piece of sandpaper may be removed. By pressing thethumb-nuts II and rods F endwise the end plate D is separated slightlyfrom the end face of the block A, and the end of the new piece ofsandpaper may be inserted in its place, with its edge in contact withthe rods F. The end plate D is then pressed firmly against the block Ato hold the sandpaper andthe sandpaper folded over the face of the blockand into its proper position, after which the plate E is replaced andthe thumbnuts tightened so that the sandpaper is held firmly in place.

I am aware that blocks for holding sandpaper have been made heretoforebut so far as I am informed these blocks all have complicatedstructures, are more expensive to construct, more likely to get out oforder or to fail to hold the sandpaper firmly during use, lessconvenient for the workmen to hold, and less convenient for use incorners or narrow spaces, and are also more extravagant in the use ofsandpaper.

What I claim is- 1. The improved sandpaper-holder, com- I prising ablock of resilient material, a pair of plates for two opposite faces ofthe block,

and securing means for holding the said plates against the adjacentfaces of the block said securing means comprising a rod passing throughthe block and engaging the said plates.

2. The improved sandpaper-holder, comprising a block, a pair of plateseach provided with an incurved edge, and securing means for holding thesaid plates against the adj acent faces of the block.

3. The improved sandpaper-holder, comprising a block, a pair of platesfor two opposite faces of the block, one of said plates being slottedfor convenience of removal, and securing means comprising a rod passingthrough the block and a thumb-.nut for holding the said plates againstthe adjacent faces of the block.

4. The improved sandpaper-holder, comprising a block, a pair of platesfor two opposite faces of the block, and securing means comprising a rodpassing through the block and a thumb-nut for holding the said platesagainst the adjacent faces of the block, said rod being fixedly attachedto one of the said plates with its end flush with the surface of thesaid plate.

In testimony whereof I affix my signature in presence of two witnesses.

MARTIN V; B. STONE.

Witnesses:

GEORGE I. DIKE, J. HENRY PARKER.

